Start to add hit impact on the sample

Source/CogSample/CogSampleDamageableInterface.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "CogSampleDamageableInterface.generated.h"
+
+//--------------------------------------------------------------------------------------------------------------------------
+USTRUCT(BlueprintType)
+struct FCogSampleDamageEventParams
+{
+    GENERATED_BODY()
+
+public:
+    UPROPERTY(BlueprintReadWrite)
+    float MitigatedDamage = 0;
+    
+    UPROPERTY(BlueprintReadWrite)
+    float UnmitigatedDamage = 0;
+    
+    UPROPERTY(BlueprintReadWrite)
+    AActor* DamageDealer = nullptr;
+    
+    UPROPERTY(BlueprintReadWrite)
+    AActor* DamageReceiver = nullptr;
+};
+
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FCogSampleDamageEventDelegate, const FCogSampleDamageEventParams&, Params);
+
+//--------------------------------------------------------------------------------------------------------------------------
+UINTERFACE(MinimalAPI, Blueprintable)
+class UCogSampleDamageableInterface : public UInterface
+{
+    GENERATED_BODY()
+};
+
+//--------------------------------------------------------------------------------------------------------------------------
+class ICogSampleDamageableInterface
+{
+    GENERATED_BODY()
+
+public:
+
+    virtual void HandleDamageReceived(const FCogSampleDamageEventParams& Params) {}
+
+    virtual void HandleDamageDealt(const FCogSampleDamageEventParams& Params) {}
+};